ATLANTIC CITY, N.J. -- It looks like Lucas Martins has finally found his correct weight class.

Finishing up a back-and-forth brawl, Martins crushed previously undefeated Alex White with a straight right hand to win his featherweight debut by knockout at 2:08 of the third round Wednesday at UFC Fight Night here at Revel. Martins pounced in for some ground and pound after putting White on jelly legs, but really it was academic after the huge punch landed.

Martins (15-1) is just the fourth person in UFC history to earn wins in three separate weight classes, joining Kenny Florian, Diego Sanchez and George Roop. The Brazilian has also won three fights in a row and, at 25, looks like a pretty solid prospect.

His Muay Thai was sharp against White, who ate a ton of punches in the first round. Martins dominated the first five minutes with his stand-up. Normally, fighting a southpaw is awkward for a right-handed fighter, but Martins actually made White, a lefty, look uncomfortable.

White (10-1) never really got into a flow on his feet. But he did land a hard combination in the second round that momentarily floored Martins. That was by far his best moment of the fight and enough to win the second.

The third was more of the same for Martins. He beat White to the punch and kept him off balance before landing that massive right that drew oohs and ahhs from the New Jersey crowd. Martins might not be ready for a contender at 145 yet, but he's close.

White, 25, remains a prospect -- you can't take away that first-round knockout against veteran Estevan Payan in his UFC debut in April.